Phoenix Contact 3214047 To securely fix the neutral busbar in place, support brackets must be installed at the start and end of each terminal strip as well as every 20cm on longer strips, ensuring stability and safety. The corresponding brackets can be sourced from Phoenix Contactcontact.com/products, which also provides details on the product specifications, including a nominal voltage of 400V, a nominal current of 28A, and various cross-section ratings for different levels of connection and mounting types.